BS-4161-4 Complete Document History
Gas meters. Plate constructed positive displacement diaphragm meters for a pressure of 350 mbar (5 lbf/in2) and up to 170 cubic meters (6000 cubic feet) per hour rating


Obsolete Revision Information:
   AMD 4216 - AMENDMENT 1 - April 29, 1983
   1970 EDITION - WITHDRAWN, 12/1/2003 - Jan. 1, 1970